JPS5590430A - Preparation of basic material for optical fiber - Google Patents
Preparation of basic material for optical fiberInfo
- Publication number
- JPS5590430A JPS5590430A JP16237978A JP16237978A JPS5590430A JP S5590430 A JPS5590430 A JP S5590430A JP 16237978 A JP16237978 A JP 16237978A JP 16237978 A JP16237978 A JP 16237978A JP S5590430 A JPS5590430 A JP S5590430A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- glass tube
- glass
- chlorine
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01876—Means for heating tubes or rods during or immediately prior to deposition, e.g. electric resistance heaters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
PURPOSE:To obtain materials for optical fibers of low loss rate by a method wherein gas containing chlorine is blank-burnt at high temperatures while flowing the gas into a glass tube before forming core glass on to the inside-wall of the glass tube. CONSTITUTION:A glass tube 1 is installed to a glass lathe 3 and rotated. An oxyhydrogen burner 2 is sent in the direction that gas, etc. containing oxygen to which chlorine gas is added flow while letting the gas, etc. flow from a gas feed-in nozzle 4, and the gas is blank-burnt at approximate 1000-1400 deg.C. And pure core glass is made up on an inwall of the glass tube 1. According to this method, transition metals are removed as chlorides by chlorine gas fed, the purity of an inner surface of the glass tube becomes higher and the diffusion of impurities to a core is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16237978A JPS5590430A (en) | 1978-12-26 | 1978-12-26 | Preparation of basic material for optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16237978A JPS5590430A (en) | 1978-12-26 | 1978-12-26 | Preparation of basic material for optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5590430A true JPS5590430A (en) | 1980-07-09 |
Family
ID=15753449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16237978A Pending JPS5590430A (en) | 1978-12-26 | 1978-12-26 | Preparation of basic material for optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5590430A (en) |
-
1978
- 1978-12-26 JP JP16237978A patent/JPS5590430A/en active Pending
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